B/W handset video door phone

Model:DF-926E1+OUT2
B/W handset type video door phone
System: PAL or NTSC
Scanning Frequency: EIA:15734Hz/60Hz CCIR:15625Hz/50Hz
Picture tube: 4.0' Flat B/W Tube
Power: AC 230V / DC15V
Power consumption: Operation: 10W/Stand-by:2W
4 wire in polarity (Power/Audio/Video/GND)
Max wire distance: Normal wire for 30M/Coaxial cable for 100M)
Resolution: 420TV Lines
Call/intercom/unlock/monitor/Alarm function.
Working temp: -10C ~ 40C

This model also can be made with 4' color TFT LCD.